Clspv crashes copying fields of larger structs

[BukeBeyond]

struct E
{
    int i1, i2, i3; // Fails
    // int i1, i2; // OK, struct smaller
};

struct S
{
  // int Shift; // OK if the following fields are shifted
  struct E e1, e2;
};

kernel void Kernel(global struct S* s)
{
    s->e1 = s->e2; // Fails
    // s->e2 = s->e1; // OK
}

https://godbolt.org/z/TTWrceYob

This looks related to #1176